[PATCH 0/2] i2c: i2c-mt65xx: add support for MT7981

[PATCH 0/2] i2c: i2c-mt65xx: add support for MT7981

[Daniel Golle]

Add support for the I2C units found in the MT7981 SoC.

Daniel Golle (2):
  i2c: mediatek: add support for MT7981 SoC
  dt-bindings: i2c: i2c-mt65xx: add binding for MT7981 SoC

 .../devicetree/bindings/i2c/i2c-mt65xx.yaml         |  1 +
 drivers/i2c/busses/i2c-mt65xx.c                     | 13 +++++++++++++
 2 files changed, 14 insertions(+)


base-commit: 24469a0e5052ba01a35a15f104717a82b7a4798b
-- 
2.39.2

[PATCH 1/2] i2c: mediatek: add support for MT7981 SoC

[Daniel Golle]

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 drivers/i2c/busses/i2c-mt65xx.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
index 43dd966d5ef5..54cabd366403 100644
--- a/drivers/i2c/busses/i2c-mt65xx.c
+++ b/drivers/i2c/busses/i2c-mt65xx.c
@@ -431,6 +431,18 @@ static const struct mtk_i2c_compatible mt8168_compat = {
 	.max_dma_support = 33,
 };
 
+static const struct mtk_i2c_compatible mt7981_compat = {
+	.regs = mt_i2c_regs_v3,
+	.pmic_i2c = 0,
+	.dcm = 0,
+	.auto_restart = 1,
+	.aux_len_reg = 1,
+	.timing_adjust = 1,
+	.dma_sync = 1,
+	.ltiming_adjust = 1,
+	.max_dma_support = 33
+};
+
 static const struct mtk_i2c_compatible mt7986_compat = {
 	.quirks = &mt7622_i2c_quirks,
 	.regs = mt_i2c_regs_v1,
@@ -516,6 +528,7 @@ static const struct of_device_id mtk_i2c_of_match[] = {
 	{ .compatible = "mediatek,mt6577-i2c", .data = &mt6577_compat },
 	{ .compatible = "mediatek,mt6589-i2c", .data = &mt6589_compat },
 	{ .compatible = "mediatek,mt7622-i2c", .data = &mt7622_compat },
+	{ .compatible = "mediatek,mt7981-i2c", .data = &mt7981_compat },
 	{ .compatible = "mediatek,mt7986-i2c", .data = &mt7986_compat },
 	{ .compatible = "mediatek,mt8168-i2c", .data = &mt8168_compat },
 	{ .compatible = "mediatek,mt8173-i2c", .data = &mt8173_compat },
-- 
2.39.2

[PATCH 2/2] dt-bindings: i2c: i2c-mt65xx: add binding for MT7981 SoC

[Daniel Golle]

Add binding documentation for the I2C controllers found in the
MediaTek MT7981 SoC.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
index 72ae2e01cf22..5ae6769483d7 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
@@ -23,6 +23,7 @@ properties:
       - const: mediatek,mt6577-i2c
       - const: mediatek,mt6589-i2c
       - const: mediatek,mt7622-i2c
+      - const: mediatek,mt7981-i2c
       - const: mediatek,mt7986-i2c
       - const: mediatek,mt8168-i2c
       - const: mediatek,mt8173-i2c
-- 
2.39.2

Re: [PATCH 1/2] i2c: mediatek: add support for MT7981 SoC

[AngeloGioacchino Del Regno]

Il 14/03/23 02:18, Daniel Golle ha scritto:
> Signed-off-by: Daniel Golle <daniel@makrotopia.org>
> ---
>   drivers/i2c/busses/i2c-mt65xx.c | 13 +++++++++++++
>   1 file changed, 13 insertions(+)
> 
> diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
> index 43dd966d5ef5..54cabd366403 100644
> --- a/drivers/i2c/busses/i2c-mt65xx.c
> +++ b/drivers/i2c/busses/i2c-mt65xx.c
> @@ -431,6 +431,18 @@ static const struct mtk_i2c_compatible mt8168_compat = {
>   	.max_dma_support = 33,
>   };
>   
> +static const struct mtk_i2c_compatible mt7981_compat = {
> +	.regs = mt_i2c_regs_v3,

I've found a downstream kernel saying that MT7981 uses `mt_i2c_regs_v2`,
hence the question:

Are you sure that this is supposed to be v3?

Regards,
Angelo

> +	.pmic_i2c = 0,
> +	.dcm = 0,
> +	.auto_restart = 1,
> +	.aux_len_reg = 1,
> +	.timing_adjust = 1,
> +	.dma_sync = 1,
> +	.ltiming_adjust = 1,
> +	.max_dma_support = 33
> +};
> +
>   static const struct mtk_i2c_compatible mt7986_compat = {
>   	.quirks = &mt7622_i2c_quirks,
>   	.regs = mt_i2c_regs_v1,
> @@ -516,6 +528,7 @@ static const struct of_device_id mtk_i2c_of_match[] = {
>   	{ .compatible = "mediatek,mt6577-i2c", .data = &mt6577_compat },
>   	{ .compatible = "mediatek,mt6589-i2c", .data = &mt6589_compat },
>   	{ .compatible = "mediatek,mt7622-i2c", .data = &mt7622_compat },
> +	{ .compatible = "mediatek,mt7981-i2c", .data = &mt7981_compat },
>   	{ .compatible = "mediatek,mt7986-i2c", .data = &mt7986_compat },
>   	{ .compatible = "mediatek,mt8168-i2c", .data = &mt8168_compat },
>   	{ .compatible = "mediatek,mt8173-i2c", .data = &mt8173_compat },

Re: [PATCH 2/2] dt-bindings: i2c: i2c-mt65xx: add binding for MT7981 SoC

[AngeloGioacchino Del Regno]

Il 14/03/23 02:18, Daniel Golle ha scritto:
> Add binding documentation for the I2C controllers found in the
> MediaTek MT7981 SoC.
> 
> Signed-off-by: Daniel Golle <daniel@makrotopia.org>
> ---
>   Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> index 72ae2e01cf22..5ae6769483d7 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> +++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> @@ -23,6 +23,7 @@ properties:
>         - const: mediatek,mt6577-i2c
>         - const: mediatek,mt6589-i2c
>         - const: mediatek,mt7622-i2c
> +      - const: mediatek,mt7981-i2c

If MT7981 uses mt_i2c_regs_v2, the i2c compatible would be

compatible = "mediatek,mt7981-i2c", "mediatek,mt8183-i2c";

Regards,
Angelo

>         - const: mediatek,mt7986-i2c
>         - const: mediatek,mt8168-i2c
>         - const: mediatek,mt8173-i2c

Re: [PATCH 1/2] i2c: mediatek: add support for MT7981 SoC

[Daniel Golle]

On Tue, Mar 14, 2023 at 10:26:56AM +0100, AngeloGioacchino Del Regno wrote:
> Il 14/03/23 02:18, Daniel Golle ha scritto:
> > Signed-off-by: Daniel Golle <daniel@makrotopia.org>
> > ---
> >   drivers/i2c/busses/i2c-mt65xx.c | 13 +++++++++++++
> >   1 file changed, 13 insertions(+)
> > 
> > diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c
> > index 43dd966d5ef5..54cabd366403 100644
> > --- a/drivers/i2c/busses/i2c-mt65xx.c
> > +++ b/drivers/i2c/busses/i2c-mt65xx.c
> > @@ -431,6 +431,18 @@ static const struct mtk_i2c_compatible mt8168_compat = {
> >   	.max_dma_support = 33,
> >   };
> > +static const struct mtk_i2c_compatible mt7981_compat = {
> > +	.regs = mt_i2c_regs_v3,
> 
> I've found a downstream kernel saying that MT7981 uses `mt_i2c_regs_v2`,
> hence the question:
> 
> Are you sure that this is supposed to be v3?

Yes, I've seen that downstream kernel and it also patches
OFFSET_SLAVE_ADDR to be 0x94 instead of 0x4 (which is the only difference
between v2 and v3 regs).

So yes, I'm sure MT7981 and MT7988 use v3 register layout.

> 
> Regards,
> Angelo
> 
> > +	.pmic_i2c = 0,
> > +	.dcm = 0,
> > +	.auto_restart = 1,
> > +	.aux_len_reg = 1,
> > +	.timing_adjust = 1,
> > +	.dma_sync = 1,
> > +	.ltiming_adjust = 1,
> > +	.max_dma_support = 33
> > +};
> > +
> >   static const struct mtk_i2c_compatible mt7986_compat = {
> >   	.quirks = &mt7622_i2c_quirks,
> >   	.regs = mt_i2c_regs_v1,
> > @@ -516,6 +528,7 @@ static const struct of_device_id mtk_i2c_of_match[] = {
> >   	{ .compatible = "mediatek,mt6577-i2c", .data = &mt6577_compat },
> >   	{ .compatible = "mediatek,mt6589-i2c", .data = &mt6589_compat },
> >   	{ .compatible = "mediatek,mt7622-i2c", .data = &mt7622_compat },
> > +	{ .compatible = "mediatek,mt7981-i2c", .data = &mt7981_compat },
> >   	{ .compatible = "mediatek,mt7986-i2c", .data = &mt7986_compat },
> >   	{ .compatible = "mediatek,mt8168-i2c", .data = &mt8168_compat },
> >   	{ .compatible = "mediatek,mt8173-i2c", .data = &mt8173_compat },
> 
> 

Re: [PATCH 2/2] dt-bindings: i2c: i2c-mt65xx: add binding for MT7981 SoC

[Krzysztof Kozlowski]

On 06/04/2023 23:41, Daniel Golle wrote:
> Add binding documentation for the I2C controllers found in the
> MediaTek MT7981 SoC.

Subject: drop second/last, redundant "binding". The "dt-bindings" prefix
is already stating that these are bindings.

Bindings come before patches using them.

BTW, I did not get previous patch at all, but your cover letter suggests
these are compatible.

Best regards,
Krzysztof

[PATCH 2/2] dt-bindings: i2c: i2c-mt65xx: add binding for MT7981 SoC

[Daniel Golle]

Add binding documentation for the I2C controllers found in the
MediaTek MT7981 SoC.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
 Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
index 685da4df688d6..fda0467cdd954 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
@@ -23,6 +23,7 @@ properties:
       - const: mediatek,mt6577-i2c
       - const: mediatek,mt6589-i2c
       - const: mediatek,mt7622-i2c
+      - const: mediatek,mt7981-i2c
       - const: mediatek,mt7986-i2c
       - const: mediatek,mt8168-i2c
       - const: mediatek,mt8173-i2c
-- 
2.40.0